NOTES: Rows are not shown if all cells for that particular row have no
values. For example, specific state by commodity rows are not shown in this
table becasue there are no data for those rows. Value-of-shipment estimates
have not been adjusted for price changes.
More information on sampling error, confidentiality protection,
nonsampling error, sample design, and definitions may be found at
http://www.bts.gov/publications/commodity_flow_survey/.

SOURCE: U.S. Department of Transportation, Research and Innovative
Technology Administration, Bureau of Transportation Statistics and U.S.
Department of Commerce, U.S. Census Bureau, 2007 Economic Census:
Transportation Commodity Flow Survey, December 2009.